Wagon-jack



(No Model.)

P. KELLOGG.

WAGON JACK( 1 No. 321,115.y A PatentedJ u.n,e3r0,.l885.

UNITED STATES PATENT OFFICE.

FRANK KELIJOGG, OF BROOKLYN, NEW YORK.

WAGON-JACK.

SPECIFICATION forming part of Letters Patent No. 321,115, dated June 30, 1885.

Application filed November 19, 1884. (No model.)

To all whom it may concern:

Be it known that I, FRANK KELLOGG, of Brooklyn, in the county of Kings and State of New York, have invented an Improvement in Wagon-Jacks, of which the following is a specification.

In Letters Patent N o. 274,498, granted to me March 27, 1882, a wagon-jaek is set forth that corresponds generally with the present invention, but the pawl or clevis that is pivoted te the standard had to be thrown out of the way of the teeth of the ratchet-bar by hand, and the loop or lifter at the end of the lever was also moved by hand.

My present invention is an improvement upon the aforesaid patent; and it is made for disengaging the pawl and lifter by depressing the lifting-lever, so as to avoid the risk of injury to the person, and also giving a better control of the jack.

In the drawings, Figure 1 is a side view of the jack with the lever vertical, as placed when not in use. Fig. 2 is a side view with thelifting-loop and pawl disengaged,the lever being depressed, and Fig. 3 is a front view.

The base A is bolted to the metal standard B upon which the forked lever E is pivoted at D, and O is the sliding ratchet-bar having the bracket-pieces c, upon which the wagon-axle rests when being lifted. The vertical edge of the standard B is a dovetailedor undercut recess to form slides for the Tshaped rib at the back edge of the ratchet-bar C, so that said bar C is kept in its position by such ribs, but allowed to move freely when lifted. There is a screw inserted at l to prevent the ratchetbar C becoming disconnected by being drawn out too far.

At the forked end of the lever E there is pivoted the lifting-loop f, said loop having projecting pivots that enter into the holes provided for them in the ends of said lever,or else eyes for connecting-bolts; and this loop serves to lift the sliding ratchet-bar as the lever is depressed, as in my aforesaid patent; but I provide at the end'of the lever-forks the cam-pieces s, which are behind and clear of the loop f during the ordinary movement of the lever, but when the lever is depressed into a horizontal position, or nearly so,the said cams, coming against the sides of the liftingloop, cause said loop to swing with the lever and pass out from the teeth of the rack, so that said rack, no longer being supported, drops of its own weight; butin order that said rack-bar may be free to drop it is necessary to first move the pawl 'or elevis b out of the Way. This is accomplished by the end of the lever E, at the upper part, coming behind the canrprojections t at the back and under portions of the sides of the clevis b, and in so doing the clevis or pawl is moved out from the teeth and so held, and this is done before the liftingloop of the lever is separated from the teeth,and thereby there is no strain upon the pawl b when it is swung out of the way of the teeth.

Vhen the jack is in use and the wagon-axle is being lifted, the lever E is to be worked up and down the same as in my aforesaid patent; but when the jack is not in use the lever is to be swung up vertically and the hinged ring o upon the levez` E hooked over the stud w that is east at the top end of the standard B.

The metal parts are, by preference, malleable cast-iron.

I claim as my invention-- 1. The combination, with the ratchet-bar. standard, and lifting-pawl, of a lever pivoted to the standard and provided with the camprojections s, that liberate the lifterpawl from the ratchet-teeth when the lever is depressed to its fullest extent, substantially as set forth.

2. The combination, with the standard, ratchet-bar, lever, and lifting-pawl, of a pawl or clevis pivoted to the standard,and provided with cam-projections that are acted upon by the lever to disconnect the clevis from the ratchet-teeth, substantially as set forth.

8. The combination, with the lever and ratchetbar, of a standard in which the ratchet-bar slides, and a pin upon such standard, and a ring or loop upon the lever for holding the latter in position when turned up vertically, substantially as set forth.

Signed by me this 17th day of November,

FRANK KELLOGG. Witnesses:

GEO. T. PINOKNEY, WILLIAM G. Morir. 

